4. Troubleshooting
4.6.4. Horizontal periodic Light/Dark Band or Dot
A. Typical faulty images
B. Troubleshooting procedure
Step
Cause
Action
1
Horizontal periodic band (OPC, 94.2 mm)
•
OPC was exposed for a long time.
•
OPC is damaged by high voltage in a short time.
As some time passes, most of this trouble will disappear.
If not, replace the Drum Unit.
(Refer to 3.3.2.1.)
2
Horizontal periodic light/dark band (Roller-magnetic,
31.4mm)
•
Roller-magnetic is inferior in quality.
•
V-groove of Roller-magnetic surface is not
uniform.
Replace the Developer Unit.
(Refer to 3.2.2.2.)
4-211
Copyright© 1995-2016 SAMSUNG. All rights reserved.